<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<input id="inputId" type="text" value="Hello JS" /><br/>
		<button onclick="clickMe()">点我</button>
		
		<script type="text/javascript">
			function clickMe() {
				console.log('clickMe');
				/* 在编程里面id是唯一标识一个事物 */
				var inputObj = document.getElementById('inputId');
				console.log(inputObj.value);
				alert(inputObj.value);  
				// Obj.value = "2332"
			}
		</script>
	</body>
</html>
